wm: Update namespace and header define guards.

src/platform/window_manager/x_connection.h

Index: src/platform/window_manager/x_connection.h
diff --git a/src/platform/window_manager/x_connection.h b/src/platform/window_manager/x_connection.h
index 8743fb933c43d021f273db0fb5fbb589a08be61e..eb0d8ead0fd62690d7bf7ffc61103af6c15d7b22 100644
--- a/src/platform/window_manager/x_connection.h
+++ b/src/platform/window_manager/x_connection.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef __PLATFORM_WINDOW_MANAGER_X_CONNECTION_H__
-#define __PLATFORM_WINDOW_MANAGER_X_CONNECTION_H__
+#ifndef WINDOW_MANAGER_X_CONNECTION_H_
+#define WINDOW_MANAGER_X_CONNECTION_H_
 
 #include <map>
 #include <string>
@@ -17,7 +17,7 @@ extern "C" {
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 
-namespace chromeos {
+namespace window_manager {
 
 typedef ::Atom XAtom;
 typedef ::Window XWindow;
@@ -277,6 +277,6 @@ class XConnection {
   DISALLOW_COPY_AND_ASSIGN(XConnection);
 };
 
-};  // namespace chromeos
+};  // namespace window_manager
 
 #endif